38 - 7Secrets Beneath the Ice Dec. 28, 2010
38 - 8Deadliest Earthquakes Jan. 11, 2011
38 - 13Smartest Machine on Earth Feb. 09, 2011
38 - 15Venom: Nature's Killer Feb. 23, 2011
38 - 16Japan's Killer Quake Mar. 30, 2011
38 - 18How Smart Are Animals? Feb. 09, 2011
